Pulling-over machine.



A. BATES.

PULLING-OVER MACHINE.

APPLICATION FILED 001'. 21, 1911 Patented Aug. 5, 1913.

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A. BATEs. PULLING-OVER MACHINE. APPLICATION FILED OGT.21, 1911.

Patented Aug. 5,, 1913 2 SHEETS'SHEET 2.

Z?M I c. (Q. 'firiM/Z 794 UNITED STATES PATENT OFFICE.

ARTHUR BATES, OF'COUNTY OF LEICESTER, ENGLAND, ASSIGNOR T0 UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW TTERSEY, A CORPORATION OF NEWJERSEY.

IULLiNG-OVER MACHINE.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, ARTHUR BATES, a subject of the King of England,residing at Leicestershire, England, have invented certain Improvementsin Pulling-Over Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likereference characters on the drawings indicating like parts in theseveral figures.'

This invention relates to machines for working uppers over lasts andparticularly to machines of the type of the pulling over machine shownin Letters Pateht of the United States 663,777, Dec. 11,' 1900. In themachine therein shown are toe and side grippers which are adjustablerelatively for large and small shoes and-the side grippers are guided insuch adjustments obliquely inwardly and backwardly and vice versa,substantially perpendicular to the diverging side edges of the forepartof a conventional shape of last, said. directions being con-- trolledthrough sliding connections between the lower portions of the grippersand oblique guides. This-direction of adjustment is advantageous forbringing the grippers into suitable relation to other parts of themachine to enable them to coiiperate to the best advantage in workingupon shoes of varying sizes. The tackers of that machine,

which cooperate to fasten the upper pulled over by each gripper, aresimilarly guided obliquely in the frame of the machine. The saidadjustment of the grippers is efiected through the spreading means whichat the end of each cycle restores the grippers to relative shoereceiving positions and during .ea'eh cycle is retracted to permit theoverdrawing movement of the grippers by which the 'upper is carriedinwardly over the shoe bottom toward position to be fastened by thetackers. The overdra'wing movement is .efiected by springs arranged inthe frame at the outer side of each gripper where they are compressedwhen the grippers are spread and are able to react to force the grippersinwardly for overdrawlng when the spreader is retracted. I The directionof this overdrawing movement of the side grippers movement of the sidegrippers is oblique to the median line of the machine and t0 the medianline of the shoe'which is being opgripper, they tend to draw theentireforward portion of the shoe upper rearwardly' as well as inwardly.It was considered at the time of the invention represented in thatpatent that the ideal diIBCtlOIl'fOI' the over- Patented Au .5,1913.

draw movement was" perpendicular to the inwardly instead of running offtoward the heel of the shoe more or less as they do when overdrawnobliquely. V

With these conditions in view, provision :is made in accordance with animportant feature of th s mvention for overdrawmg,v

the upper by the sidegrippers of a pullingover machine in a directionnormal .to the median line of the machine. It is, however,

important to preserve the oblique initial relation of the side rippersto, one another,

parallel with the e ges of the last, for seizingthe upper because itwould be less convenient to insert the upper between the gripper jaws ifthey did not extend in substantially the direction in which the upperextends along the side of the last. In accordance, therefore, withanother very important feature of this invention provision is made forpositioning the grippers with their jaws extending- 1n divergingdirections, as parallel with the side aces of the last, and fordirecting overdraw movement of the grippers in directions normal to themedian line of the last.

In carrying out this invention according to the illustrated embodimentthereof the aforementioned uides which control the direction of overawinglmovement, and of adjustment, of the side grippers are angularlymovable so that after the grippers have seized the upper the guides canbe moved to a position in which they will direct the overdrawingmovement in lines normal to the median line of the last. The extent ofthis movement. of the guides can be varied to ob tain any desireddirection of overdraw movement approximating the normal to the medianline. Also as herein shown and in accordance with another feature of theinvention the movement or adjustment of the said guidesis accompaniedby, and preferably is made to produce, a turning movement of thesidegrippers from their upper receiving positions parallel with thediverging sides of the last into positions parallel with the median lineof the last. This adjustment, accompanied by turning of the grippers, ismade to take place automatically and is followed by an automaticrestoration of the grippers to their angular upper receiving positions,and this is another feature of the invention. This new movement is madeto take place in time relation to other gripper movements, and occurs asherein shown near the end of the updrawing stroke of the gripperoperating cam, although it is to be remembered that this cam movement'istransmitted yieldingly so that in some instances the actual updrawingmovement may have ceased before the turning movement will take place.Provision is made for adjust ment by which the turning movement willoccur earlier or later. The turning movement of the gripper while itholds the upperunder strain has an advantageous effect in that it twiststhe upper and carries the portion held by the rear ends of the gripperjaws, and which extends about the last in the rear of the tip seam,farther inwardly over the last bottom than the portion which is adjacentto the tip seam and is held by the front ends of the jaws. This effect-sadditional straining and overdrawing of the more stretchy portion of theshoe vamp.

This turning movement'also hasthe effect of carrying forwardly as wellas inwardly the upper from the rear of the grippers and causes it to liein a desirable manner in over the shoulder of the last edge that islocated where the shank joins the ball of the last. The upper isfastened by a plurality of tacks in the described overdrawn position andlies into the shank better than it otherwise would do in the sidelasting operation.

These and other features of the invention, including certain details ofconstruction and combinations of new devices with old mechanisms,will'now be described and will then be pointed out in the claims.

Figure 1 is a side'elevation of a pullingover machine of the typerepresented in-said rior patent and equipped with the presentimprovements; Fig. 2 is a section approxi-n weenie mately perpendicularto the plane of the shoe bot-tom in-Fig. 1 and extending through the tipstraightening mechanism by which the opposed side grippers can beadjusted simultaneously in opposite directions lengthwise of the lastfor shifting the pulled upper longitudinally around the last; saidsection also shows the toothed shaft of the foredrawing mechanism bywhich the two side grippers are moved simultaneously in the P samedirection to draw the upper forwardly at the two sides of the last.These two mech anisms are not new with me, the tip straight eningmechanism being like that shown in said prior patent, while thefo-redrawing mechanism is like that shown in United States applicationSerial No. 577,054, filed Aug. 13, 1910, and these mechanisms are hereshown only for the purpose of disclosing their cotipcrative relation 'tothe mechanism which is added to the machine by the resent invention" Fi3 is in section taken approximately parallel to the plane of the shoebottom in Fig. l and extending through the grippers and directly abovethe fore and to British specification 1230 1 /03 for detaileddescription of the machine as a whole and. it will, thereforeybe onlynecessary to refer here briefly to the general construction.

The head of the machine has bearing for a cam shaft 2 by which areturned updraw cams shown in dotted lines in Fig. 1, which haveconnection with the gripper closing and updrawing levers 4.. From theselevers depend the toe gripper mechanism and the two side grippermechanisms, the latter of which each comprises a bar 5 suspended from alever 4 by a ball connection which permits universal movement of theside gripper. Each bar 5'extends through a gripper casing 6 and isoperatively connected to the gripper aws so that upward movement of thebar first closes the jaws and then lifts them, together with the casing6, for seizing and then updrawing the upper to strain it about the lastwhich is rested upwardly against the sole or bottom rest '8, The solerest als o has a downward movement derived from a cam on the shaftv '2,

by means'of which it takes part in the upper straining operation. Thecam shaft 2 has yielding connectionbetween .them as fully explained insaid British specification 12,304/03. The front, yieldingly drivensection has an upright arm 12 fromwhich is forwardly projected arod 13encircled byia sprin 14, passing through a block swiveled in a ever 15'that has a depending handle and is fast on a rock shaft 16, Fig. 2, ofthe foredrawing mechanism. By toothed portions the shaft 16 has drivin'gengagement with blocks 18 to slide them forwardly and backwardly in themachine head. In these blocks, and moved lengthwise of the shoe with andby them is the toothed rock shaft 20 of the tip straightening mechanism.This rock shaft, .to which a hand lever 21 is fastened, has drivingengagement with a rack bar 22 located under it. and with a rack bar 23located over it, said bars being conside gripper for moving saidgrippers r..- spectively in opposite directions simultaneously to adjustthe upper held by them around -the last for straighteningthe toe tipseam.

In accordance with this invention the front end of. each rack bar 22, 23has a pivotal connection with ahorizontally extending gripper guide 25,which formerly was integral with the rack bar and constituted a rigihead therefor as in Fig. 33 of said Patent 663,777. In eachguide 25slides the horizontal member 26 of a connection which comprises also avertical member 28 with which the gripper casing has sliding engage--ment upwardly and downwardly by reason of.

the actuation of updraw lever 44. The pivoted gripper guides 25 areconnected together at their adjacent ends by a linkor block 30 which isin turn pivoted to a lever 32 and constitutes an equalizer between thetwo guides for transmit-ting movement.of the lever 32 and a compensatorfor permitting use, Fig.

4, of the tip straightening mechanism'without disarrangin the connectionwith lever 32. Said lever is 'fulcrumed to a bracket 34 on the machinehead and has at its outer end an operative connection witha rod 35 whichis movable endwise in the head by a, bell crank 36, 37, fulcrumed at 38.The rear arm 37 of this bell crankhas a roll resting onthe upper edge ofa cam block 40 that is adjustably attached at 39 to the yieldinglydriven section of-the slide which actuates the foredrawing devices. -Bythese connections the gripper guides 25, 25 are turned togetherautomatically in time relation to other gripper movements. Each of thegripper casmgshas an inwardly extending abutment 41 that is held againstthe guide 25 for that gripper by the pressure of the overdraw springs42,- 42 which act laterally against the gripper casing through the plate43. Throu h engagement with said abut-- s5 ments 41 t e guides "25transmit turning nected respectively with the left and right movement tothe gripper casings, the ball connections ofthe rods 5 with updrawlevers approximately in" the line of the updrawing stralnon the upper.An abutment 45 located on the outer side of each rack ,bar 22, I

23 limits-the outward turning of'the guides and grippers, any excess ofmovement from cam 10 being taken up by the spring that connects thesections of the cam actuated slide. This arrangement provides forturning the grippers, during each cycle of the machine, from a positionsuch as that shown in Fig. 3 where the jaws are parallelwith the sideedges of the last and with the portion of upper which they are to seize,into the position shown in Fig. 4 where the jaws are approximatelyparallel with the median line of the last and the guides 25 extend in adirection approximately perpendicular, or

ing the lastpart of the updrawing movement of the grippers or after theupdraw may have been completed. The adjustment for the camblock at 39permits selection of the exact time bestsuited to'the requirements ofthework'iii hand. In any case this turningor angular adjustment of thegrippers in the illustrated embodiment of the invention, takes place inadvance of and preiparatory to the overdrawing movement an positions thegripper guides 25,. 25 for directing that movement in linesapproximately normal to the median line of the last instead of in linesinclined at a substantial angle backwardly toward the heel of the last.-The overdraw movement is effectedby the action of the springs 42, 42whenthe spreader 50, shown in detail in Fig. 37 of allows a spring 52-to return the side grip go' pets to their angular position, Fig. 3, ap.proximately parallel with the sides of the last. The angularity of thisposition can be varied to suit lasts having more. or less divergingsides by. djustment of the weentric connection 54 between the bell crankarm 36 and the slidin rod 35. The equalizer 3O permits one si egripperjtojbe posi-I "tione'd' at a slightly different angle from theother one for unsymmetrical lasts, whichjgb are sometimes nearlystraight on the inner side and have a large sWin' on the outer side.-With' t e vpresent improvement each gripper cantake, during normal tothe median line of the last during the overdraw movement. Thus the upper'is drawn squarely across the last bottom and the overdraw has notthe backward component ofymovement which tends to cause the tip seam torun ofi toward the heel of the last. The' turning of the gripperspreparatory to the overdrawing movement carries therear ends of thejawsinwardly,

as will be evident from a comparison of Figs. 3 and 4, and causes atightening of the portion ofupper'held by the rear'ends ofthe jawsrelatively to, the portion at or nearer to the tip seam. It will beunderstood that ,the' ,foredrawing mechanism drafts the u perforwardlyon the last, as contemplate by priorrinventions, and that the newdirection ofoverdrawing carries the upper inwardly over the last bottomwithout counteracting the eifect of the foredraw by dragging the upper.backward.

V The operation 'ofthejmachine has been sufficiently set forth inconnection with the foregoing description to make it clear.

Having explained the nature of the invention and described a pre'ferredembodiment thereof, .IicIaim as new and desire to secure by LettersPatent of the United States 1. Apulling over machine having, in com--bination, grippers located on opposite sides of the last, means forrelatively moving the grippers and the last for straining the upperabout the last; and means by whichto efiect turning movement of a sidegripper,

while it holds theupper, about an axis extending in substantially thedirection ofthe pulling strain. 7

2 A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last; 'and means by which toimpart to the side grippers, while they hold the upper, turningmovements to change the position of the jaws from ap-' proximateparallelism with the respective sides of the last into approximateparallelism with the median line of the-last.

3. A pulling over machine having, in combination, grippers located onopposite sides i of the last, means for relatively moving the orinclination ghaaajie grippers and the last for straining the upper aboutthe last and for actuating the grippers to draw the upper over the lastbottom and means for turning the grippers, while they hold the upper andprior to the overdraw,about axes substantially perpendicular to theplane of the shoe bottom.

4. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last; and means for actuatingthe side grippers, while they hold the upper, to carry the rear ends ofthe gripping jaws and the portions of stock held thereby on both 80sides of the last inwardly relatively to the front ends of the jaws.

5. A pulling over machine having, in combination, rippers located onopposite sides of the las means for relatively moving the grippers andthe last for straining the upper about the last, means for actuating thegrippers to effect overdrawin of the upper, gripper guides forcontrolling the direction of overdrawing movement; and means foradjusting said guides angularly in the same direction toward thecenterfline of the last to vary alike for both side grippersthedirection of the overdrawing movement.

6. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last, means for actuating thegrippers to eliect overdrawing of the upper, gripper guidesnormally-extending obliquely to the median line of the machine forcontrolling the direction of the overdrawing movement; and means foradjusting said guides automatically after the grippers have seized thestock and before the termination of the overdraw. V I

7. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper abo lt the last, means for actuatingthe grippers to ,efiect overdrawing of the upper,

gripper guides which position the gripper" ]3.WS angularly andrelatively to the edge of the last for seizing the upper; meansoperating as a part of the normal operation of the machine for turningthe guides to position the grippers more nearly parallel with oneanother after the upper has been seized, and means for actuating thegrippers along the guides so positioned for eiiecting the overdrawing ofthe upper.

8. A pulling over machine having, in combination, grippers located onopposite sides of the last, means -for relatively moving the grippersandthe last for straining the upper about the last, means for actuating thegrippers to efiect overdrawing of the upper; and means permittingangular positions of the grippers with their jaws parallel to thediverging right and left sides of the last for seizing the upper andoperatin after the upper has been seized to cause t e grippers to moveparallel with thetoe tip seam in overdrarzing the upper.

9. A pulling over machine having, in com bination, grippers located onopposite sides of the last, means for relativel moving the grippers andthe last for straining the upper about the last,'means for actuating thegrippers to effect overdrawing of the upper; and mechanism forcontrolling the angular posi tion of the gripper jaws operating tolocate the jaws parallel to the sides of the'last for gripping and-toturn them into right angular relation to the tip seam for overdrawing.10.- A pulling over machine having, in combination, grippers located onopposite sides of the last,means for relatively moving the grippers andthe last for straining the upper about the last, means for actuating thegrippersto effect overdrawing of the upper; and controlling mechanismoperating to locate the jaws of the grippers paralle to turn thegrippers in the direction to tighten the upper held by their rear endsinwardly over the last edge, and to direct .overdrawing movementsquarely across the last bottom at right angles to the median line ofthe last.

a 12. A pulling over machine having, in

combination, grippers located on opposite sides of the last, means forrelatively moving the grippers and the last for straining the upperabout the last, and mechanism at tached to one lateral edge .ofeach sidegri per and arranged for operation to turn t e grippers. P j

13. A pulling over machine having, in combination, -grippers located, onopposite sides of the last, means for relatively-moving the grippers andthe last 'for straining the upper about the last; and mechanism attached to one lateral edgeofeach side gripper and operatingautomatically. in time relation-to the updrawing movement to twist aswell as to strain upwardly the upper.

14. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining to the diverging. sides of the last for grippingand combination, grippers located on opposite sides of the last, meansfor relatively moving the, grippers and the last for straining theupperabout the last, means for actuating the grippers inwardly over thelast bottom to overdraw the upper; and means op-. erating automaticallyto cause a greater overdrawing strain on the port-ion of upper which isheld by the rear ends of the gripper jaws and extends about the ball ofthe last than the overdrawing strain on the portion of upper which isheld by the front ends of the jaws and extends across the last at ornear the toe tip seam location.

16. pulling over machine having, in combination, grippers located normalto the opposite sides of the last, means for relas tively moving thegrippers and the last for straining the upper about the last; andmechanism by which overdrawing of the upper is effected in lines normalto the median lineof the last without special attention from theoperator.

17-. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last. for straining the upper about the last; and mechanism whichcanbe adjusted to effect overdrawing of the upper in lines normal to themedian line ofthe last or inclined more or less in either directionrelatively thereto and auto matic operating means for said mechanism.

18. A pulling over machine having, in

combination, grippers located on opposite returning the grippers tonormal angular shoe receiving position.

having, in combination, grippers located on opposite sides of the last,means for relatively moving the grippers and the last for straining theupper about the last; and mechanism operating automatically to turn theside grippers from one angular relation to'the median line of themachine to another relation and back again during each pulling overoperation. g

20. A pulling over machine having, in combination, grippers located onopposite 19. A pulling over machine sides of the last, means forrelatively m0ving the grippers and the last for straining tion to theupper straining movement and connections from the driver to the sidegrippers to turn them, said mechanism having provision for adjustment tovary sald time relation.

22. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last, means for efi'ectingforedrawing of the upper; and mechanism by which. overdrawing of theupper is etfected in lines substantially normal to the median line ofthe last.

23. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively mov ing the grippersand the last for straining the upper about the last, means forefl'ecting foredrawing of the upper; and guides operating to turn thegrippers from upper receiving positions oblique to the median line ofthe last and direct overdrawing movement in lines substantially normalto the said median line.

24. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last, means for effectingforedrawing of the upper, means for moving the side grippersrespectively in opposite directions for straightening toe tip seams; andmechanism connected with said side grippers to change their angularrelation to the median line of the last between the gripping and theoverdrawing of the upper and having an equalizer to permit the tipstraightening movement of the grippers.

25. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last; a guide for eachgripper slidingly connected therewith and having an abutting face forengagement with the gripper, and means for actuating the guide to turnthe gripper through said connection and abutting engagement.

526. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively movoa ers ing thegrippers and the last for straining the upper about the last; a guidefor each gripper slidingly, connected with the rear lateral edge orrearend of the gripper, an abutting faoe'arranged forengagement withthegripper at the inner side of said connection, means for .yleldlnglyholding the gripper against said abutting face, and means for operatingthe guide to turn the gripper against the pressure of said yieldingholding means.

27. A pulling over machine having, in combination, grippers located onopposite sides of the last, means for relatively moving the grippers andthe last for straining the upper about the last; and means for turningthe side grippers, while they hold the upper under strain, about axeslocated forward of their rear ends whereby the rear ends are caused todraw the upper from the shank forwardly and inwardly over the shoulderof the lastedge that is located where the shank joins the ball of thelast.

28. A pulling over machine having, in combination, grippers arranged toengage the upper at opposite sides of the last and actuating andcontrolling mechanism therefor operated and arranged to cause thegrippers to stand with their jaws approximately parallel with thesideedge of the lastwhen they grip the upper and in their overdrawmovement be approximately parallel with and move in a directionapproximately perpendicular to the median line of the last.

29. A pulling over machine having in c0mbinati0n,'side gripper jaws thathave a closing, an updrawing and an overdrawing movement and that Whileclosing are approximately parallel with the portion of upper that theygrip, and means to adjust both pairs of side gripper jaws together sothat in their overdraw movement they shall be approximately parallelwith and shall move in a direction approximately perpendicular to, themedian line of the last.

30. A pullin over machine having, in combination, si e grippers, meansfor closing and for updrawing the grippers, ineansoperatingautomatically for foredrawing the grippers, and means forefiecting overdraw movement of the grippers in directions approximatelyperpendicular to the median line of the last.

31. A pulling over machine having, in combination, side grippers, meansfor closing and for updrawing the grippers, means for toredrawing thegrippers, and means for turning each side gripper on an axisextendingsubstantially in the direction of upward strain efi'ected bythat gripper.

32'. A pullin over machlne having, in combination, si e grippers, meansfor closing and for updrawing the grippers, means for turning each sidegripper on an axis extending substantially in the direction of upwardstrain eflected by that gripper, and means for effecting overdrawingmovements of the grippers. I

33. A pulling over machine having; in combination, side grippers, meansfor closing and updrawing the grippers, and means acting on the gripperswhich can be caused to effect overdrawing of the marginal edge of theupper on both sides of the last in directions inclined forwardly on the,shoe bottom. j

34. A; pulling over machine havig, in combination, side grippers, meansfor c losing and updrawing the grippers, means for overdrawing thegrippers, means for turn-' ing the-grippers after they have seized theupper, and means for returning the grippers to upper seizing position,said machine having provision for adjusting theangular position to whichthe side grippers are restored to suit the inclination of the side edgeof the last to the median line of-the last.

35. A pulling over machine having, in combination, side grippers, meansforclosing and updrawing the grippers, means for overdrawing thegrippers, andmeans connected with both side grippers and arranged foradjustment to change simultaneously and in the same direction eitherforwardly or backwardly the angular relation of both side grippers tothe median line of the last.

36. A pulling over machine having, in combination, side grippers, meansfor closing and updrawing the grippers,means for overdrawing thegrippers, and means connecting the two side grippers and including anetjualizing. connection which governs the angular relation ofthegrippers to the median line of the last and permits the side grippers toadjust themselves unsymmetrically for lasts, the inner and outer sidesof whichare inclined unequally to the median line of-the last.

37.'A pulling over 'machine having, in combination, side grippers, meansfor closing and updrawing the grippers, means for overdrawing thegrippers, and mountings for said .side grippers permitting them to turnto aline the jaws with the diverging side edges of the last andconnecting the opposite side grippers to cause one gripper to turnreversely to the other.

38. A pulling-over machine having, in

combination, shoe restlng means, grippers located on opposite sides ofthe last, and operating means efiecting relative move ments of thegrippers and the last and arranged to cause the upper to be pulled with

